Changing Shapes of Lands

Things required : Modelling clay, table, talcum powder

Experiment : Take modelling clay of different colours. On a table sprinkle some talcum powder and now one by one lay down the layers of different colours one above the other in the form of stack. Now, if you push the stack from both sides, it will rise in the middle forming a hill in the middle. This is the way the rocks rise to form mountains. Now cut the layers in an angle and insert piece of card below the pieces of clay stack on outer sides. This is how land on sides rises while the middle one sinks to form rift valley.